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问题 多项选择题

能引起甲状腺机能亢进病人术后死亡的并发症是（）。

A.喉头水肿

B.喉上神经损伤

C.误切全部甲状旁腺

D.甲状腺危象

E.双侧喉返神经损伤

答案

参考答案：A, C, D, E

句型转换

按括号内的要求改写下列各句。

1. Tom thinks they are scary. (改为否定句)

    Tom _____ _____ they _____ scary. .

2. Her cousin likes thrillers.  (就划线部分提问)

    _____ _____ of _____ does her cousin like?

3. I want to see a movie. (改为同义句)

    I want _____ _____ _____ a movie.

4. My favorite movie star is Jack Chan. (就划线部分提问)

    _____ _____ your favorite movie star?

5. I like movies and I like Beijing Opera. (改为简单句)

    I like movies _____ _____  _____.

6. She doesn't like to see movies. (改为肯定句).

    She _____ _____ movies.

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单项选择题

Questions 6～10


It is Monday morning, and you are having trouble waking your teenagers. You are not alone. Indeed, each morning, few of the country’s 17 million high school students are awake enough to get much out of their first class, particularly if it starts before 8 am. Sure, many of them stayed up too late the night before, but not because they wanted to.
Research shows that teenagers’ body clocks are set to as schedule that is different from that of younger children or adults. This prevents adolescents from dropping off until around 11 pm, when they produce the sleep-inducing hormone melatonin, and waking up much before 8 am when their bodies stop producing melatonin.
The result is that the first class of the morning is often a waste, with as many as 28 percent of students falling asleep; according to a National Sleep foundation poll. Some are so sleepy they do not even show up, contributing to failure and dropout rates.
Here is an idea: stop focusing on testing and instead support changing the hours of the school day, starting it later for teenagers and ending it later for all children. Indeed, no one does well when they are sleep-deprived, but insufficient sleep among children has been linked to obesity and to learning issues like attention deficit/hyperactivity disorder. You would think this would spur educators to take action, and a few have.
In 2002, high schools in Jessamine County in Kentucky pushed back the first bell to 8:40 am, from 7:30 am. Attendance immediately went up, as did scores on standardized tests, which have continued to rise each year. In Minneapolis and Edina, Minnesota, which instituted high school start times of 8:40 am and 8:30 am respectively in 1997, students’ grades rose slightly and lateness, behavioral problems and dropout rates decreases. Later is also safer. When high schools in Fayette County in Kentucky delayed their start times to 8:30 am, the number of teenagers involved in car crashes dropped, even as they rose in the state.
So why has not every school board moved back that first bell Well, it seems that improving teenagers’ performance takes a back seat to more pressing concerns: the cost of additional bus service, the difficulty of adjusting after school activity schedules and the inconvenience to teachers and parents.
But few of these problems actually come to pass, according to the Center for Applied Research and Educational Improvement at the University of Minnesota. In Kentucky and Minnesota, simply flipping the starting times for the elementary and high schools meant no extra cost for buses.
There are other reasons to start and end school at a later time. According to Paul Reville, a professor of education policy at Harvard and chairman of the Massachusetts Board of Education, "trying to cram everything out 21th-century students need into a 19th-century six-and-a-half-hour day just isn’t working". He said that children learn more at a less frantic pace, and that lengthening the school day would help "close the achievement gap between disadvantaged students and their better-off peers".

What does the passage mainly discuss ______

A. Teenagers need much more sleep than they actually have now.
B. The schedule of teenagers should be made different from that of adults.
C. Starting the first class late is advantageous in more than one way.
D. Unanticipated problems will arise from the postponement of the first class.
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